NK2 file transfer - Outlook 2003 - XP to Win7

Hi

I am trying to transfer an NK2 file from an XP machine to Win7, for Outlook 2003 but not having much success. Am putting the NK2 file in:

C:\Users\%username%\AppData\Roaming\Microsoft\Outlook

I have ensured I have renamed the NK2 file to %profilename%.NK2

Any suggestions?

Thanks